BB149A
UHF variable capacitance diode
Rev. 4 — 5 September 2011
Product data sheet
1. Product profile
1.1 General description
The BB149A is a variable capacitance diode, fabricated in planar technology and
encapsulated in the SOD323 very small SMD plastic package. The excellent matching
performance is achieved by gliding matching and a Direct Matching Assembly (DMA)
procedure.
1.2 Features and benefits
Excellent linearity
Excellent matching to 2 % DMA
Very small SMD plastic package
C
d(28V)
: 2.1 pF; C
d(1V)
to C
d(28V)
ratio: 9
Low series resistance.
1.3 Applications
Electronic tuning in UHF television tuners
Voltage Controlled Oscillators (VCO).
2. Pinning information
Table 1.
Pin
1
2
Pinning
Description
cathode
anode
1
2
Simplified outline
[1]
Symbol
sym008
[1]
The marking bar indicates the cathode.
3. Ordering information
Table 2.
Ordering information
Package
Name
BB149A
SC-76
Description
plastic surface mounted package; 2 leads
Version
SOD323
Type number
NXP Semiconductors
BB149A
UHF variable capacitance diode
4. Marking
Table 3.
BB149A
Marking
Marking code
PL
Type number
5. Limiting values
Table 4.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
V
R
V
RM
I
F
T
stg
T
j
Parameter
reverse voltage
peak reverse voltage
forward current
storage temperature
junction temperature
in series with a
10 k resistor
Conditions
Min
-
-
-
55
55
Max
30
35
20
+150
+125
Unit
V
V
mA
C
C
6. Characteristics
Table 5.
Characteristics
T
j
= 25
C unless otherwise specified.
Symbol
I
R
Parameter
reverse current
Conditions
V
R
= 30 V
see
Figure 2
T
j
= 85
C;
see
Figure 2
r
s
C
d
diode series
resistance
diode
capacitance
f = 470 MHz
f = 1 MHz; see
Figure 1
and
3
V
R
= 1 V
V
R
= 28 V
18.22
1.951
-
-
2.1
1.27
21.26
2.225
-
pF
pF
[1]
Min
-
-
-
Typ
-
-
0.6
Max
10
200
0.75
Unit
nA
nA
C
d
1V
---------------
-
C
d
2V
C
d
1V
------------------
C
d
28V
C
d
25V
------------------
C
d
28V
C
d
---------
-
C
d
[1]
capacitance ratio f = 1 MHz
capacitance ratio f = 1 MHz
8.45
9
10.9
capacitance ratio f = 1 MHz
-
1.05
-
capacitance
matching
V
R
= 1 V to 28 V; in a
sequence of 10 diodes
(gliding)
-
-
2
%
V
R
is the value at which C
d
= 9 pF
BB149A
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 4 — 5 September 2011
2 of 8
NXP Semiconductors
BB149A
UHF variable capacitance diode
30
C
d
(pF)
20
mlc391
10
0
10
−1
1
10
V
R
(V)
10
2
f = 1 MHz; T
j
= 25
C.
Fig 1.
10
3
I
R
(nA)
10
2
Diode capacitance as a function of reverse voltage; typical values.
mlc816
10
−3
mlc815
TC
d
(K
−1
)
10
−4
10
1
0
20
40
60
80
T
j
(°C)
100
10
−5
10
−1
1
10
V
R
(V)
10
2
T
j
= 0
C
to 85
C.
Fig 2.
Reverse current as a function of junction
temperature; maximum values.
Fig 3.
Temperature coefficient of diode capacitance
as a function of reverse voltage; typical
values.
BB149A
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 4 — 5 September 2011
3 of 8
NXP Semiconductors
BB149A
UHF variable capacitance diode
7. Package outline
Plastic surface-mounted package; 2 leads
SOD323
D
A
E
X
H
D
v
M
A
Q
1
2
b
p
A
A
1
(1)
c
L
p
detail X
0
1
scale
2 mm
DIMENSIONS (mm are the original dimensions)
UNIT
mm
A
1.1
0.8
A
1
max
0.05
b
p
0.40
0.25
c
0.25
0.10
D
1.8
1.6
E
1.35
1.15
H
D
2.7
2.3
L
p
0.45
0.15
Q
0.25
0.15
v
0.2
Note
1. The marking bar indicates the cathode
OUTLINE
VERSION
SOD323
REFERENCES
IEC
JEDEC
JEITA
SC-76
EUROPEAN
PROJECTION
ISSUE DATE
03-12-17
06-03-16
Fig 4.
BB149A
Package outline SOD323 (SC-76).
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 4 — 5 September 2011
4 of 8
NXP Semiconductors
BB149A
UHF variable capacitance diode
8. Revision history
Table 6.
Revision history
Release date
20110905
Data sheet status
Product data sheet
Change notice
-
Supersedes
BB149A v.3
Document ID
BB149A v.4
Modifications:
•
•
•
The format of this data sheet has been redesigned to comply with the new identity
guidelines of NXP Semiconductors.
Legal texts have been adapted to the new company name where appropriate.
Package outline drawings have been updated to the latest version.
Product data sheet
Product specification
Product specification
-
-
-
BB149A v.2
BB149A v.1
-
BB149A v.3
(9397 750 13826)
BB149A v.2
(9397 750 12654)
BB149A v.1
(9397 750 02653)
20041005
20040301
19971217
BB149A
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 4 — 5 September 2011
5 of 8
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